Terminal, radio communication method, and base station

Abstract

A terminal according to one aspect of the present disclosure includes: a control section that determines whether an event to be a trigger of a CSI report occurs, based on a measurement result related to channel state information (CSI) of at least one of a serving cell, a neighbour cell, a primary cell, a primary secondary cell, and a secondary cell; and a transmitting section that transmits an aperiodic CSI report when the event occurs. According to one aspect of the present disclosure, an aperiodic CSI report can be appropriately performed.

1 . A terminal comprising:
 a control section that determines whether an event to be a trigger of a CSI report occurs, based on a measurement result related to channel state information (CSI) of at least one of a serving cell, a neighbour cell, a primary cell, a primary secondary cell, and a secondary cell; and   a transmitting section that transmits an aperiodic CSI report when the event occurs.   
     
     
         2 . The terminal according to  claim 1 , wherein a condition for the event is same as a condition for an event to be a trigger of a Radio Resource Management (RRM) report. 
     
     
         3 . The terminal according to  claim 1 , wherein the event occurs based on a measurement result of a reference signal received power in layer 1 (L1-RSRP). 
     
     
         4 . The terminal according to  claim 1 , wherein the transmitting section transmits the aperiodic CSI report by using a Medium Access Control Control Element (MAC CE), when the event occurs. 
     
     
         5 . A radio communication method for a terminal, the radio communication method comprising:
 determining whether an event to be a trigger of an aperiodic CSI report occurs, based on a measurement result related to channel state information (CSI) of at least one of a serving cell, a neighbour cell, a primary cell, a primary secondary cell, and a secondary cell; and   transmitting the aperiodic CSI report when the event occurs.   
     
     
         6 . A base station comprising:
 a receiving section that, when it is determined that an event to be a trigger of an aperiodic CSI report occurs, based on a measurement result related to channel state information (CSI) of at least one of a serving cell, a neighbour cell, a primary cell, a primary secondary cell, and a secondary cell, receives the aperiodic CSI report; and   a control section that controls reception of the aperiodic CSI report.   
     
     
         7 . The terminal according to  claim 2 , wherein the event occurs based on a measurement result of a reference signal received power in layer 1 (L1-RSRP). 
     
     
         8 . The terminal according to  claim 2 , wherein the transmitting section transmits the aperiodic CSI report by using a Medium Access Control Control Element (MAC CE), when the event occurs. 
     
     
         9 . The terminal according to  claim 3 , wherein the transmitting section transmits the aperiodic CSI report by using a Medium Access Control Control Element (MAC CE), when the event occurs.